Low-pressure high-flux hollow fiber nanofiltration (NF) membrane, and preparation method and use thereof
US11878271B1 · kind B1 · utility
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19Claims
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Key dates
| Filing date | Jun 14, 2023 |
| Grant date | Jan 23, 2024 |
| Priority date | — |
| Expiry date | Jun 14, 2043 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02A20/131
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A low-pressure high-flux hollow fiber nanofiltration (NF) membrane, and a preparation method and use thereof are provided. The low-pressure high-flux hollow fiber NF membrane includes a base membrane and a negatively-charged separation layer formed on a surface of the base membrane, where a material of the separation layer is a crosslinking product of a negatively-charged sulfonated polymer. The low-pressure high-flux hollow fiber NF membrane of the present disclosure solves the technical problem that the hollow fiber NF membranes in the prior art are difficult to have both high performance and low energy consumption.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.